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fix some dodgy algebra in scrollbars

This commit is contained in:
Michael Hudson-Doyle 2019-02-27 14:28:05 +13:00
parent ee9956671e
commit 2587b6dd02
1 changed files with 10 additions and 3 deletions
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13
subiquitycore/ui/container.py
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@ -488,17 +488,24 @@ class ScrollBarListBox(urwid.WidgetDecoration):
#
# rows and that being < 1 simplifies to the below.
o = self.bar.base_widget.options
if maxrow*maxrow < height - 2:
if maxrow < top + bottom:
boxopt = o('given', 1)
else:
boxopt = o('weight', maxrow)
top_arrow = self.top
if top == 0:
top_arrow = urwid.AttrMap(top_arrow, 'scrollbar')
bot_arrow = self.bot
if bottom == 0:
bot_arrow = urwid.AttrMap(bot_arrow, 'scrollbar')
self.bar.base_widget.contents[:] = [
(self.top, o('given', 1)),
(top_arrow, o('given', 1)),
(self.bg, o('weight', top)),
(self.box, boxopt),
(self.bg, o('weight', bottom)),
(self.bot, o('given', 1)),
(bot_arrow, o('given', 1)),
]
lb_canvas = lb.render((maxcol - 1, maxrow), focus)
bar_canvas = self.bar.render((1, maxrow), focus)